Mixing implement for plasterers



1,659,024 T. I e. HAMILTON MIXING IMPLEMENT FOR PLAS'IERERS Feb; 14, 1'9231 FiledJune 16. 1927 2 Sheets-Sheet].

Feb. 14, 1928. 1,659,024

T. G. HAMILTON MIXING IMPLEMENT FOR PLASTERERS Filed June 16. 1927 2 Sheets-Sheet 2 l- W 1 ,4 j

v i UNITED-STATES Mrs-NT o e Ol Patented Feb. 14, 192 I FFICE.

THOMA$ e. HAMILTON; OFjCI-I fClAGO, ILnINoIs, Ass'IGNoR or ONE-THIRD T0 IDA NEWBERG, or CHICAGO, ILLINo s.

MIXING Ill/IPLEMENT roR PLAs'T' RERs.

J Application med June 16,

My invention relates to improvements in mixing implementsfor Plasterers, more particularly to an implement for preparing the mixture of plaster andlime for the plastering of walls and the like. r, j I

An obj ect of the invention is to providean implement of the character described which embodies novel means for completely break ing up any lumps in the lime prior to the gaging of the mix, so that the lime is in proper condition for receiving the plaster during thework of mixing.

A further object of the invention isto' provide an implement of the character described; which by its novel construction simultaneously performs the double function of'kneading the mass so as to cause sub-portions to move with respect toother portions and in separating the mass assub-p'ortions 11love, thus causing a. thorough and uniform mixture of the plaster and lime.

. A furtherobject of the invention is to provide an implement which when inverted presents a relatively small group of its cutting bars to the mix at a point adjacent to the board, some of which contact with the board so as to pulverize smaller lumps in the mix by movement'of the lumpsbetween the bars and the board.

At the present time the process known as gaging is performed upon a board by the plasterer with a square implement known as the hock and the trowel. With these two implements the lime and plaster is mixed, the plaster and water being admitted to a depression formed at the center of the lime upon the board from which point it is worked into the lime. This process is exceedingly tiresome to the arm of the plasterer and cons sumes a relatively long time if the mix is thorough. In practice Ihave found that the present method usually produces a plaster which contains streaks of either lime or plasteig both of which are unsuited for the purpose intended and which often show through paint or calcimine finish.

My invention is illustrated in the accompanying drawingsforming a part of said case, in which I Fig. 1. is a perspective view showing my improved mixing implement in use;

Fig. 2 is a top plan View of the implement; Fig. 3 is the side elevation of the structure illustrated in Fig.2;

1927. Serial No. 199,20 5.

loop 2 has its ends bent as shownat 1- and projected within the base portion of a handle 5, about which a-metallic sleeve 6 is disposed.

These I The upper portions of the loops 1 andS are secured to the loop 2 by-transversely disposed rods 7. A plurality of parallel rods 8, square in cross section and spaced about 1' inch apart, are securedto the bottom, front and a portion of the topside of the loops 1, 2, and 3, as shown in Fig. 3. These rods are so disposed as to present the sharpcmaiers thereof away from the loops. Thus downward movement of the implement brings the sharp edges of the lowerbars 8 into contact with the mix-and forward movement brings the bars at the front with their sharp edges in contact with the mix. The upper and rearward portion of the loop 2, as shown at 9, is

curved downwardly so as to permit suliicientclearance about the sleeve 6 for the grasping thereof by the hand of the operator as shown in Fig. 1.

A pair of diagonal struts 10 are secured at 1,1 to the sleeve 6 and are fixed at their lower ends 12 by spot welding process to a gage plate 13. This gage plate 13 is of sheet steel and is secured to the outer rearward sides of the loops 1, 2 and 3.

A shield let, formed integral with the gage plate 13 and having the contour illustrated in Fig. 2, is secured to the curved portion 9 of the loop 2. The purpose of the shield 14 is to prevent plaster from touching the hand of the operator as it grips the sleeve 6, particularly during that step in the operation wherein the implement is brought down upon the lime prior to gaging for the purpose of waist. He then grasps the implement, as

the mass by the l over or more with respect to adjacent porshown in Fig. l, and hears directly down thereupon so as to move the bars 8 down through the mass. This operation is repeated until any lumps of lime in the mass are reduced to finer consistency, after which a depression is made in the center of the lime and water and plaster 1'? poured therein. The mix is now ready for that process known as This is done moving the im- ,plement downwardly and transversely across the bosrd so that as the bars 8 descend, the gage ylate l3moves sub-portions of the mass laterally Cihe r sult of this cutting up of es the sub-portions roll tions he practical elimination of all lumps as well as thorough mixing of the plaster and lime.

lhis operation is repeated until the entire mass appears uniform in consistcncy. The tool is then i11 ed, as shown at Fig. :3, so that two of the ba 1, as shown at El, engage with the board 16. end the tool worked forwardly and back, which process rinses the pulverizing of any small pieces of lime which might lie close to the board, as well as an additional and liner co-mingling of the elements.

li hile F; have illustrated and described a specific embodiment of my invention, many modifications may be made without departing from the spirit of the invention, and I do not wish to be limited to the precise details set forth but desire to avail myself of all changes within the scope of the appended claims.

Having thus described my invention, whet I claim as new and desire to secure by Letters Patent of the United States is:

1.. A mixing implement of the character described, comprising a body frame, a plnrality'of spaced-apart parallel rods carried by the body, a substantially flat plate carried at the rear of the body, and a handle for the implement, said rods and said gage plate lying in planes transy rse to the axis of the handle.

2. A mixing implement of the character described, comprising an open body a plurality of spaced-apart metal rods carried by the bottom and front of said frame, a h ge plete extending in a plan substantially .lnnsverse to the bottom-of said frame, and a handle for said body frame.

3. A miXin implement of the character descrilfmed, comprising a body frame. a plurality of spaced apart parallel rods angular in cross section carried by thebottom, front and a portion of the top of said frame. and

having corners throughout their lengths fecing outwardly from the frame, and a handle for said frame having its axis transverse to the axes of said rods.

In witness whereof, I hereunto subscribe my name this 14th day of June, 1927.

THOMAS G. HAMILTON.

frame, 

